JPH08143U - High voltage / abnormal voltage wiring bracket - Google Patents

Abstract

(57) [Abstract] [Purpose] Easy and reliable connection and fixing of the junctions and bends of electric wires and hollow electric wires in high-voltage lines of high-voltage facilities, special high-voltage lines of special high-voltage facilities, ground lines of lightning protection facilities, etc. Providing metal fittings that can be used. [Structure] The conductor portion 1 is provided with a cylindrical connecting portion 2 provided at a confluence portion of the ground wires 3a, 3b, 3c of the lightning rod and having an insertion hole 20 for each ground wire, and the connecting portion. In the high-voltage / abnormal-voltage wiring metal fitting A in which the conductor portion is formed so that the discharge passage formed between them has an obtuse angle with respect to the ground wire connection direction, the ground wires 3a, 3b inserted into the insertion holes 20 A configuration in which a slit 21 as a fixing means for fastening and fixing 3c to the insertion hole, a fastening seat 22 of the slit, and a fastening bolt 24 are provided in the connecting portion 2.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 INDUSTRIAL APPLICABILITY The present invention is used in a wiring process requiring low impedance of a line in a lightning protection facility, a high voltage facility, a special high voltage facility, etc., and has a low impedance wiring fitting formed to reduce a propagation loss such as a surge current. Regarding the improvement of.

[0002]

[Prior art]

 If the grounding conductor that connects the tip of the lightning rod to the grounding electrode is bent at a right angle due to the structure, the impedance characteristic of this right angle part becomes large when a lightning surge current with a very steep waveform enters. As a result, the wiring resistance value of the lightning protection wiring path increases. Therefore, the lightning surge current from the lightning rod may leak to a route other than the ground fault route, which may damage buildings and electrical equipment. In order to solve this problem, the present inventor has applied for a grounding wire connecting hardware having a structure that does not increase the impedance of the bent portion of the grounding wire at a right angle (see Japanese Utility Model Laid-Open No. 64-38770).

This conventional grounding wire-connecting hardware is provided at a confluence portion or a bent portion at right angles of a grounding wire that connects a tip end portion of a lightning rod to a ground electrode, and has a cylindrical shape having an insertion hole for the grounding wire. A structure in which the formed connecting portion is provided at least at both ends of the conductor portion and the conductor portion is formed so that the discharge passage formed between the connecting portions forms an obtuse angle with respect to the ground conductor connecting direction. Is.

[0004]

[Problems to be solved by the device]

 However, this conventional one has the feature that lightning surge current can be safely discharged without raising the impedance of the discharge path, but the grounding conductor should be fixed only by brazing or by caulking after inserting into the insertion hole of the metal object. In this case, if the metal object is placed vertically in a suspended state, it will be difficult to support the metal object and the grounding wire during work such as brazing, and the opening of the insertion hole will face downward. It becomes difficult for those who have become brazed. Therefore, there has been a problem that a safe discharge passage cannot be secured unless sufficient brazing is performed inside. There was also the problem that it was not possible to confirm whether or not brazing had been performed sufficiently inside the insertion hole. In addition, since there is no fixing means when using hollow electric wires (gas pipe type, Hederheimer type, anaconda type, etc.) for wiring, it was difficult to use the hollow electric wires in the wiring process.

The present invention has been made in order to solve the above conventional problems, and the purpose thereof is to temporarily fix and easily perform wiring work and hollow wire connection. In addition, high-voltage and low-impedance characteristics that can be applied to high-voltage wiring facilities, special high-voltage wiring facilities, lightning protection facilities, etc. that use the surface effect, which is a high-voltage flow path characteristic that enables sufficient brazing. It is to provide wiring fittings for abnormal voltage.

[0006]

[Means for Solving the Problems]

 As means for achieving the above-mentioned object, in the high-voltage / abnormal-voltage wiring fitting according to claim 1 of the present invention, a high-voltage line of a high-voltage facility, a special high-voltage line of a special high-voltage facility, a ground line of a lightning protection facility, etc. In the joint portion of the electric wire or the hollow electric wire, or in the bent portion in the right-angled direction, etc., the tubular-shaped connecting portion having the insertion hole of the electric wire or the hollow electric wire is provided at least at both ends of the conductor portion and the connecting portion. A high-voltage / abnormal-voltage wiring fitting in which the conductor portion is formed so that the discharge passage formed between them is an obtuse angle with respect to the connecting direction of the electric wire or hollow electric wire. A fixing means for tightening and fixing the electric wire in the insertion hole is provided in the connecting portion. Further, in the wiring fitting for high voltage / abnormal voltage according to claim 2, in the wiring fitting for high voltage / abnormal voltage according to claim 1, the fixing means opens an insertion hole of an electric wire or a hollow electric wire in an axial direction. And a fixing screw for tightening the slit to reduce the diameter of the insertion hole. The high-voltage / abnormal-voltage wiring fitting according to claim 3 is the high-voltage / abnormal-voltage wiring fitting according to claim 1 or 2, wherein the insertion hole is provided at an end of an electric wire or a hollow electric wire. In addition, a screw portion that is screwed with the screw portion is provided.

[0007]

[Action]

 In the high-voltage / abnormal-voltage wiring fitting according to the first aspect, the electric wire or the hollow electric wire is inserted into the insertion hole of the connection portion and tightened, so that the electric wire is fixed to the connection portion as it is. In addition, in the high-voltage / abnormal-voltage wiring fitting according to claim 2, the fixing screw provided in the connection portion is tightened to reduce the diameter of the insertion hole, so that the electric wire or the hollow electric wire inserted into the insertion hole. Is fixed to the connection part. Also, the slits can be used to braze the connection part and the electric wire or hollow electric wire along the insertion hole. Further, in the high-voltage / abnormal-voltage wiring fitting according to the present invention, since the threaded portion is provided in the insertion hole, the wire or hollow wire is provided with a threaded portion to be screwed into the threaded portion. Thereby, the electric wire or the hollow electric wire can be fixed to the connection portion. After that, the fixing screw can be tightened or brazed from the slit to further secure the fixing.

[0008]

【Example】

 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a plan view showing a high-voltage / abnormal-voltage wiring fitting according to an embodiment of the present invention, FIG. 2 is a front view of the same as above, FIG. 3 is an enlarged view of a connecting portion of the same in a plan view, and FIG. FIG. 3 is an enlarged view showing a state in which the connection part of FIG. In this embodiment, the case where the wiring fitting is used in a lightning protection facility will be described as an example. The high-voltage / abnormal-voltage wiring fitting A of this embodiment mainly includes a conductor portion 1 and connecting portions 2a, 2b, 2c. The conductor portion 1 is for forming a discharge passage of a lightning surge current, and in the present embodiment, it is drawn from the other side at right angles to the ground electric wires 3a and 3b which are arranged in a straight line and serve as ground busbars. The lightning surge current from the ground wire 3c is formed in a substantially triangular shape so as to form an obtuse angle discharge passage in any direction. In FIG. 1, L is a discharge passage provided in the direction from the ground wire 3c to the ground wires 3a and 3b, and both edges La and Lb of the discharge path are extensions of the ground wire 3c inwardly of the conductor portion 1. It is formed concentrically with a large circle that is substantially in contact with the center lines of the ground wires 3a and 3b. The cross-sectional shape of the discharge passage L is cylindrical, cylindrical, elliptical, square, or the like.

The connection parts 2a, 2b, 2c are for connecting the ground wires 3a, 3b, 3c to the conductor part 1 in a fixed state, and each connection part has an insertion hole 20 and has a cylindrical shape. Slits 21 that are formed and that open the insertion hole 20 in the axial direction are provided on both sides of the insertion hole 20 over substantially the entire length of the insertion hole 20. The slit width is formed so that a gap is appropriately formed even when a predetermined ground wire is inserted into the insertion hole 20 and tightened. Further, the fastening seats 22 are provided in parallel with each other so as to sandwich the slit 21, and the through-holes 23 are provided in the fastening seats 22, respectively. In the figure, reference numeral 24 is a bolt for fastening and fixing which is provided with a nut, and the slit 21 and the fastening seat 22 constitute a fastening means.

Further, the connecting portions 2a, 2b, 2c are arranged in the conductor portion 1 such that the connecting portions 2a, 2b of the ground electric wires 3a, 3b serving as the ground busbars are arranged to face each other, and the connecting portion of the ground electric wire 3c is disposed. 2c is arranged so as to be orthogonal to the center of the line connecting the connecting portions 2a and 2b. The connecting portion is integrally formed with the conductor portion 1 by a brass material, a copper material, an iron material, or the like.

Next, the operation of the embodiment will be described. At a place where a grounding electric wire that joins the grounding busbar from the other side is connected, firstly, the electric wires 3a and 3b to be the grounding busbars are sequentially inserted into the insertion ports 20 of the connecting portions 2a and 2b and fastened with a bolt 24. Next, the ground wire 3c is inserted into the insertion port 20 of the connecting portion 2c, and tightened and fixed by the bolt 24. Then, silver brazing is performed using the opening side of each insertion hole 20 and the slit 21.

As described above, since the ground wires 3a, 3b, 3c can be fastened and fixed to the wiring fitting A with the bolts 24 before the silver brazing, even when the wiring fitting A is mounted in the suspended position. , One person can easily work. Further, since the slit 21 can be used for brazing over the insertion length of the ground wire, a complete connection can be performed. In addition, this connection requires both the connection in which the insertion hole 20 forms a crimped body with each ground wire due to the tightening force of the bolt 24, and the connection by brazing. It is electrically and structurally safe even if there is an external force.

Although the embodiment of the present invention has been described above, the specific configuration of the present invention is not limited to this embodiment, and even if there are design changes and the like within the scope of the invention, Included in the device. For example, in the embodiment, the description has been made with the connection portion 2 provided at three places, but the present invention is not limited to this, and as shown in FIG. 5, the direction in which the connection portion 2 is orthogonal to the portion where the ground conductor is simply bent at a right angle is provided. It may be arranged in two places. Also, four or more connecting portions may be provided.

Further, in the embodiment, the slits 21 are provided on both sides of the insertion hole 20, but the invention is not limited to this, and the slits 21 may be provided at four positions in the cross direction so as to tighten each, or together with the tightening seat 22. It may be provided in one place.

Further, in the embodiment, the slit 21, the tightening seat 22 and the bolt 24 constitute the means for fixing the ground wire, but the present invention is not limited to this, and the connecting portion may be inserted so as to enter the side surface of the insertion hole 20. A screw hole may be set up in the screw hole, and a set screw may be screwed into this screw hole to tighten and fix the inserted ground wire. In this case, a brazing hole may be provided at an appropriate position of the insertion hole in the same manner as the above-mentioned screw hole.

Further, although the bolt 24 is provided on the tightening seat 22, the bolt mounting structure is arbitrary. For example, a counterbore and a screw hole are provided above and below the slit 21 in the connecting portion, and the bolt is installed here. You may make it screw it.

Further, the cross-sectional structure of the conductor portion 1 is arbitrary and may be a hollow structure as well as a solid structure. Further, the conductor portion 1 may be provided with a mounting hole for an insulator or the like, and the material of the conductor portion 1 may be arbitrary.

Further, the connecting portions 2a, 2b, 2c are provided with shaft-like protrusions on the conductors, and fixing means are provided at both ends of the sleeve-like body, and one end side is fitted to the shaft-like protrusions. It is also possible to have a connecting portion structure in which the other end side is inserted and fixed while being attached.

When a hollow electric wire is used for wiring, as shown in FIG. 6, a male screw portion 30 is provided on the outer peripheral surface of the end of the hollow electric wire 3d, and a wiring fitting having an internal screw portion 25 in the insertion hole 20. You may make it connect by screwing said screw parts using B. In this case, in the case where the hollow electric wire 3d is formed of a plurality of strands such as a Hederheimer type, the ends may be soldered in advance and firmly integrated, and then threaded. In addition, thread processing can be straight or tapered. It can also be used in combination with a normal solid electric wire.

Further, the wiring fittings A and B may have a shape as shown in FIGS.

[0021]

[Effect of device]

 As described above, since the high-voltage / abnormal-voltage wiring fitting according to claim 1 of the present invention has the above-described configuration, even if there is a wiring portion or the like that is suspended in the air, the insertion hole of the connection portion is formed. Since an electric wire can be inserted into the and the electric wire can be clamped and fixed and then brazing or the like can be performed, wiring work or the like can be easily performed by one person. In addition, it is possible to obtain an effect that the electric and structural safety is improved. In addition, since the high-voltage / abnormal-voltage wiring fitting according to claim 2 has the above-mentioned configuration, by tightening the fixing screw to reduce the diameter of the insertion hole, the electric wire inserted in the insertion hole can be easily formed. Can be fixed to. Therefore, the wiring work can be easily performed by one person even if there is a wiring portion or the like that is suspended in the air. Also, since the wire can be brazed along the insertion hole through the slit, the connection between the connection part and the wire can be performed accurately, and in the unlikely event that brazing is insufficient or external force is applied. Even in this case, it is possible to obtain the effect that it is sufficiently safe electrically and structurally. Further, in the high-voltage / abnormal-voltage wiring fitting according to the third aspect, since it has the above-mentioned configuration, it is possible to obtain an effect such that a threaded portion is provided at the end portion of the hollow electric wire so that the hollow electric wire can be easily screwed and connected. To be

[Brief description of drawings]

FIG. 1 is a plan view showing a wiring fitting for high voltage / abnormal voltage according to an embodiment of the present invention.

FIG. 2 is a front view showing the above-described high-voltage / abnormal-voltage wiring fitting.

FIG. 3 is an enlarged view showing a state in which the above connecting portion is viewed in a plan view.

FIG. 4 is an enlarged view showing a state in which the above connecting portion is viewed from the front.

FIG. 5 is a plan view showing a high-voltage / abnormal-voltage wiring fitting of another embodiment.

FIG. 6 is an explanatory diagram showing a main part of a high-voltage / abnormal-voltage wiring fitting and a hollow electric wire according to another embodiment.

FIG. 7 is a plan view showing a high voltage / abnormal voltage wiring fitting of another embodiment.

FIG. 8 is a plan view showing a high-voltage / abnormal-voltage wiring fitting of another embodiment.

FIG. 9 is a plan view showing a high-voltage / abnormal-voltage wiring fitting of another embodiment.

FIG. 10 is a plan view showing a high-voltage / abnormal-voltage wiring fitting of another embodiment.

[Explanation of symbols]

 A wiring bracket for high voltage / abnormal voltage B wiring bracket for high voltage / abnormal voltage 1 conductor part 2a connection part 2b connection part 2c connection part 3a grounding wire 3b grounding wire 3c grounding wire 3d hollow wire 20 insertion hole 21 slit (fixing means) ) 22 tightening seat (fixing means) 24 bolt (fixing means) 25 female screw portion 30 male screw portion

Claims (3)

[Scope of utility model registration request] 1. An electric wire or a hollow electric wire, which is provided at a joining portion or a bent portion at a right angle of an electric wire or a hollow electric wire in a high-voltage line of a high-voltage facility, a special high-voltage line of a special high-voltage facility, a ground line of a lightning protection facility, or the like. The cylindrical connecting portion having the insertion hole is provided at least at both ends of the conductor portion, and the discharge passage formed between the connecting portions has an obtuse angle with respect to the electric wire or hollow electric wire connecting direction. A high-voltage / abnormal-voltage wiring fitting having a conductor portion, wherein the connecting portion is provided with fixing means for fastening and fixing an electric wire or a hollow electric wire inserted in the insertion hole to the insertion hole. Wiring metal fittings for high voltage and abnormal voltage. 2. The high-voltage / abnormal-voltage wiring fitting according to claim 1, wherein the fixing means has a slit that opens an insertion hole of an electric wire or a hollow electric wire in an axial direction, and a diameter of the insertion hole by tightening the slit. High-voltage / abnormal-voltage wiring fittings that are equipped with a fixing screw that reduces 3. The high voltage according to claim 1 or 2.
In the abnormal voltage wiring fitting, the insertion hole is provided with a screw portion to be screwed with a screw portion provided at an end of an electric wire or a hollow electric wire.